CN101895824A - The method and system of control distribution of multimedia broadcast services - Google Patents

The method and system of control distribution of multimedia broadcast services Download PDF

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Publication number
CN101895824A
CN101895824A CN2010102340298A CN201010234029A CN101895824A CN 101895824 A CN101895824 A CN 101895824A CN 2010102340298 A CN2010102340298 A CN 2010102340298A CN 201010234029 A CN201010234029 A CN 201010234029A CN 101895824 A CN101895824 A CN 101895824A
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mbms
transmission
sub
district
data segment
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CN101895824B (en
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史蒂芬·E·泰利
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InterDigital Technology Corp
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InterDigital Technology Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/189—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast in combination with wireless systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10—Dynamic resource partitioning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/24—Accounting or billing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/34—TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Computer Security & Cryptography (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

The method that a kind of wireless multi-cell communication systems and control MBMS service (MBMS) are scattered.This system comprises that at least one can be disseminated to MBMS the network of one or more wireless receiving/delivery units (WTRUs), for example, and global terrestrial radio access network (UTRAN).In a specific embodiment, whether this MBMS can provide periodic cell update to activate to special sub-district according to and cancel.In another specific embodiment, when MBMS received through affirmation, this MBMS transmission can stop.In another specific embodiment more, this MBMS can be through cutting apart the resource that can be used by network and/or WTRUs to lower during MBMS scatters.

Description

The method and system of control distribution of multimedia broadcast services
Patent application of the present invention is that international application no is PCT/US2003/041035, international application no is on December 23rd, 2003, the application number that enters the China national stage is 200380108226.3, and name is called the dividing an application of application for a patent for invention of the method and system of distribution of multimedia broadcast services " control ".
Technical field
The present invention is widely about a kind of radio communication.More particularly, The present invention be directed to and in a wireless communication system (such as time division duplex (TDD), frequency division duplexing (FDD), code division multiple access (CDMA) and/or global system for mobile communications (UMTS)), provide at least one or multinomial MBMS service (MBMS).
Background technology
In delivering the operation scheme of (Release) R99/R4 and R5, the UMTS standard summarizes out the third generation described order of partner (3GPP) wideband CDMA (W-CDMA) system that pulls together.This system uses TDD and fdd mode, and uses how common and exclusive channel to set up a communication link.Those descending (DL) common channels comprise that main common control physical channel (P-CCPCH) that at least one comprises this BCH (broadcast channel) and/or at least one comprise the less important common control physical channel (S-CCPCH) of access channel (FACH) forward.
This communication link typically uses a wireless transmission/receive unit (WTRU) to set up.The device of subscriber unit, beeper or any other pattern that can under wireless environment, operate that WTRU comprises (but being the non-system of exceeding) user's equipment, mobile radio station, fixes or moves.These typical wireless environment patterns comprise (but being the non-system of exceeding) WLAN and public land mobile network.Can be in this described WTRU with timesharing pattern or frequency division pattern (such as being TDD and FDD distinctly) operation." base station " comprises (but being the non-system of exceeding) node B (Node B), platform controller (site controller), access site or other interface arrangement in wireless environment.
What known is that binding performance at the cell edge place of multi-cell wireless communication system is a thing of being concerned about for a long time, particularly concerning common channel.Link to analyze demonstrated the wireless WTRU on the cell edge can under a certain decline state, have greater than 10% or even higher Block Error Rate (block error rate) (BLER).In addition, for the optimization capacity, what want is as P-CCPCH a S-CCPCH to be set in identical time slot.
Provided and be MBMS by the network operator by the service of the special grade that S-CCPCH transmitted.In wireless communication system, use MBMS to come efficiently a common data, services to be disseminated to several users.
MBMS is different with traditional point-to-point (PtP) service (such as voice or two-way video conference), and it is intended to receive the identical information that is transmitted by this network for a group user.Therefore, the realization of MBMS is different with the PtP service, and the latter transmits on the physical channel of user's special use usually, yet the former more is appropriate to transmit on the common physical channel that can be received by several WTRU.With regard to data rate, the demand of MBMS is changed in the scope of the highest about 100kbps, but concerning the demand of MBMS, the most general demand then is presented at about 64kbps place, each sub-district, and has 90% user to be contained by MBMS in this sub-district.
In cdma system, provide the basic problem of MBMS to be, control unless use exclusive channel otherwise be difficult to allow this physical channel that carries MBMS accept power.Therefore, the essential transmission power of setting the base station, so that in the group that this is served, the MBMS user who is positioned at the farthest, base station can receive this physical channel quite reliably.In essence, this base station must be supported in the possibility of some user at this cell edge among N the MBMS user group, and therefore, this transmission power can be set according to user's needs.But concerning most user, this power is too big far away.This can produce asymmetric interference volume to other user in identical and adjacent cell.
With example it is described, Primary Study to wideband W-CDMA FDD demonstrates, in order to reach in having the typical FDD sub-district of 64 kbps MBMS more than the containing of 90% WTRU, the typical case will need about 30% base station power to carry MBMS on this physical channel.Need it should be noted that equally the utmost point is difficult under the data rate that can keep the MBMS user of service at the cell edge place.
Therefore, required is to lower this large resource demand.For this purpose, the method that some can be used to lower the required power branch rate of MBMS has been discussed out, to improve the binding performance of this MBMS channel.These comprise: 1) than long interlocking, that is, contain the long Transmission Time Interval (TTI) of time diversity (diversity) preferably; 2) this MBMS channel is transmitted diversity; And 3) improve chnnel coding.Can use this technology will be used for supporting that the required FDD base station power branch rate of example of 64 kbps MBMS is reduced to about 10-20% from 30%.
Concerning the narrow frequency TDD of UMTS (NTDD) (1.28Mcps selection), by high interference degree that this MBMS produced can by physical channel time slot (timeslot) (TS) in exploitation frequency recycling and alleviating.This is possibility on principle, because the bandwidth of each NTDD carrier wave is less.For example, can in the 5MHz range assignment of FDD or wideband TDD (WTDD), support three narrowband carriers.
Use the method, some sub-district will be at special time slot (TS n) in transmit MBMS, second group at TS with frequency f 1 nIn but with frequency f 2 transmit and the 3rd group at TS nIn but transmit with frequency f 3.Because the distance between two base stations of carrying MBMS in identical TS with same frequency is longer, separate so can reach more space, therefore, can produce less interference to other sub-district from MBMSTS.But the operator must have these three kinds of obtainable frequencies in this spreading area.Lower the technology that transmits (Tx) power demand and comprise TTI length, soft handoff (softhandover) and the Tx diversity of for example using than length.
Owing to before global terrestrial radio is inserted the discussion of (UTRA) FDD, it has indicated and can be reduced to the base station DL Tx power of some 15-20% downwards with reference to MBMS to support 64 kbps on S-CCPCH.
Previous system discloses one in the 5MHz bandwidth, in containing the LCR TDD system that 3 low chip rates (low chiprate) (LCR) are carried out in the spreading area of carrier wave based on R4, in this system, MBMS can be mapped on the S-CCPCH who is included in the single time slot, and this time slot is supposed one 3 the frequency recycling factor.These results demonstrate LCR TDD can provide the MBMS of the highest 64kbps under Block Error Rate=10% (BLER=10%); Or when in the S-CCPCH time slot, using full up base station Tx power, can be supported in BLER=1% about 16-32kbps down.
Moreover, reusing stating earlier in the communication system skill of the factor in the time domain (time-domain) of using 3, the sub-district in the 1st group will be at TS nMiddle its MBMS that transmits, the sub-district in the 2nd group will be at TS N+1The sub-district that middle its MBMS of transmission reaches in the 3rd group will be at TS N+2Middle its MBMS that transmits.Sub-district in the 1st group is not with TS N+1And TS N+2Be used in any transmission (up (UL) and DL the two); Sub-district in the 2nd group is not with TS nAnd TS N+2Be used in any transmission or the like.The method with the MBMS block the duration irrelevant (that is, irrelevant) with its TTI mode operate.Each sub-district is the 170kbps/ sub-district with the average MBMS data rate that the method was produced, and the time slot efficient on MBMS TSs is 170kbps/3TSs=56kbps/TS in this system.
Fig. 1 demonstrate by above-mentioned mention state the employed typical data frame sequence of communication system skill (data frame sequence) earlier, by this a Frame is divided into TS 1-15.Repeat those frames, and subsequently frame kept identical TS assignment, up to this TS through removing or through assignment especially again.Each time slot is the predetermined frame number of assignment one potentially.
Fig. 2 demonstrate by above-mentioned mention state the employed channel assignment figure of communication system skill earlier.To give different time slots in the sub-district assignment on the same group not.Originate and transmit MBMS when broadcasting when can have overlapping coverage area from several, can use this arrangement.
In order to illustrate, the coding that assignment one is consistent with sub-district in first group (group 1) is given at TS 1In WTRU M1.The coding that assignment one is consistent with sub-district in second group (group 2) is given at TS 2In WTRU M2, and the coding that assignment one is consistent with sub-district in the 3rd group (group 3) is given at TS 3In WTRU M3.This is apparent among the frame A, and repeat subsequently frame up to one or more assignments through changing.
Still refer to Fig. 2, in frame A 78, those sub-districts of organizing 1 are assigned to the first time slot group TS 1Remaining time slot TS 2-TS nThen can't help to organize 1 use.Organize 1 used physical channel and be assigned as whole S-CCPCH.The sub-district of those groups 2 is assigned to the second time slot group TS 2Remaining time slot TS 1And TS 3-TS nThen can't help to organize 2 uses.Organize 2 used physical channels and be assigned as whole S-CCPCH.The sub-district of those groups 3 is assigned to the 3rd time slot group TS 3Remaining time slot TS 1-TS 2And TS 4-TS nThen can't help to organize 3 uses.Organize 3 used physical channels and be assigned as whole S-CCPCH.This pattern is recycled and reused for frame B 80, the time slot TS that will be consistent 1-TS 3Assignment gives those in the sub-district on the same group not.
Be noted that the above-mentioned shortcoming of mentioning of stating communication system skill earlier is time slot TS 1, TS 2And TS 3Can't be used in other transmission.Therefore, if when a time slot is used in sub-district in one group, then this time slot can't be organized the sub-district by another and uses.What will want is to have the one group of TDD sub-district that can share time domain recycling pattern.
Concerning the radio resource that is fit to is used, the traceable effective MBMS user's quantity of global terrestrial radio access network (UTRAN).When initial in each sub-district, concerning each MBMS, this effective user's quantity can make and be used in each sub-district decision and can be applied to the transmission of this MBMS and the pattern of physical resource, and and stop this MBMS.
Owing to MBMS activates and user's migration service of setting up.Incorporate radio resource control (RRC) layer 3 into imagining the mechanism of following the trail of MBMS user, to send with MBMS " addings " (activate and serve) and to carry out the signal of cell update, to keep those users' position.Along with these instruments know that user has activated this service and this service needs to scatter to that sub-district.
Because closed loop power control and the application that transmits diversity, when a kind of especially user's quantity of MBMS hour, exclusive channel is more efficient.When user's quantity increased, exclusive channel efficiency gain can't compensate duplicating of each data flow, so use can provide the common channel of single data flow to several users.The method has been known as transmission/physical channel to be switched, and whenever can be applicable between the MBMS transmission period.
When using common channel, use the ARQ technology and guarantee that successful transmission is unactual.Therefore, can repeat each MBMS transmission to increase the probability of successfully transmitting.Chuan Shu number then can take into account the transmission that is applied to this service and the BLER that estimates of physical resource again.
MBMS can transmit for several times to guarantee successful transmission preferably.Chuan Shu number is relevant with the channel quality of expectation again.This number will consider that the poorest situation scheme is to reach a service quality (QoS) of estimating.This example one for being positioned at cell edge and result as the user when a high BLER is arranged.The user often will experience radio propagation state preferably, and will reach the transmission of success before transmission is finished again well.
Generally speaking, some improvement of wanting are for overcoming the shortcoming relevant with known MBMS.At first, needs one can be supported the new method of UMTS WTDD and NTDD, and it also can increase the capacity of the common channel that is used to provide MBMS.Secondly, want a workability to develop skill and improve the system of resource efficiency, one group of TDD sub-district can be installed by this share time domain recycling pattern.The 3rd, no obvious service is transmitted sign and is existed, so any user who has activated MBMS will charge because of reception.Therefore, concerning UTRAN, that wants provides an enough number of transmission again to guarantee reliable reception.
Summary of the invention
The present invention can comprise in the wireless multi-cell communication systems of at least one network of communicating by letter with one or more WTRUs one and carries out.The distribution of this communication system may command MBMS from network to WTRU.This communication system can be a FDD or TDD communication system.
In a specific embodiment, this at least one WTRU can activate this MBMS.This WTRU can provide the renewal of one-period property to this network, to indicate first sub-district of the communication system that WTRU operates therein.This network can be disseminated to WTRU with this MBMS.When WTRU stops to provide when periodically updating or operating in a sub-district different with first sub-district of communication system, this network can stop MBMS at the WTRU place.
In another specific embodiment, this network can be disseminated to WTRU with MBMS by transmitting several MBMS transfer of data.This WTRU can demonstrate whole MBMS transfer of data to this network and receive.Then, this network can stop this MBMS transfer of data.
In another specific embodiment more, this network can be divided into MBMS several each other data segments, and each MBMS data segment is sent to WTRU.This WTRU can be stored in each the MBMS data segment that is received by WTRU suitably in one internal memory.This WTRU can identify the MBMS data segment that at least one is not received by WTRU suitably to this network.This network only can will should transfer to WTRU by the MBMS data segment through differentiating again.
Before transmitting the MBMS data segment, this network can to this WTRU indicate each MBMS data segment when tendency to develop deliver to WTRU and how many data segments MBMS comprises.Each MBMS data segment can comprise at least one to be made and is used for confirming the Cyclical Redundancy Check (CRC) that this MBMS data segment has successfully been transmitted by WTRU.The network operator can determine whether this WTRU has received whole MBMS data segments, so that promote pay (billing).
In another specific embodiment more, this network can be divided into MBMS the MBMS data segment out of the ordinary that several plans desire to be sent at different time WTRU.This network can demonstrate different planned times and how many data segments this MBMS comprises to this WTRU.This network can be sent to WTRU with the MBMS data segment at different planned time places.This WTRU can be at different planned time place activation one receivers therein, to receive the MBMS data segment by this network was transmitted.This WTRU can identify the MBMS data segment that at least one is not received suitably by WTRU to this network.This network can demonstrate the distribution time to WTRU, demonstrates the MBMS data segment when desire will be somebody's turn to do through differentiating and is sent to WTRU.This network only can will should transfer to WTRU by the MBMS data segment through differentiating again.This WTRU can activate this receiver therein at this time place through distributing, to receive this MBMS data segment through transmitting again.
In another specific embodiment more, specific cell that should be in communication system one in the WTRUs of operation can activate MBMS.This network can determine the WTRUs quantity of operating in activating the specific cell of MBMS.The WTRUs quantity that this network can be determined is that brigadier's resource allocation is to specific sub-district.This network can use this resource through distributing that this MBMS is disseminated to WTRUs.When whole WTRUs cancelled this MBMS, this network can stop MBMS and these Internet resources of reallocating at the WTRUs place.
Can come thinner portion ground to understand the present invention by the preferred embodiment of following description, it furnishes an explanation with example and the figure of following that can associated is understood.
Description of drawings
Fig. 1 illustrates a priority of use and states typical sequence of data frames in the communication system skill, and one of them frame comprises 15 time slots;
Fig. 2 demonstrates a priority of use and states channel assignment figure in the communication system skill, wherein to using unique time slot in the sub-district on the same group not;
Fig. 3 is according to a specific embodiment of the present invention, in TDD or the wireless multi-cell communication systems of FDD with the flow chart of MBMS service assignment to the sub-district;
Fig. 4 is an instance graph of carrying out the time domain recycling in the TDD communication system, wherein shares a time slot in the sub-district on the same group not with the sub-district in other group, but can be according to the present invention with the time slot applied in any combination of uniqueness in the sub-district on the same group not;
Fig. 5 is the example of an execution time domain recycling in the FDD system, wherein used according to the invention one overlapping assignment;
Fig. 6 is the calcspar of a communication system (TDD or FDD), and it can carry out the MBMS oos service by a specific embodiment according to the present invention, switches and end of service with control transmission/physical channel;
Fig. 7 is the calcspar of a communication system (TDD or FDD), and it can carry out a cell update program by a specific embodiment according to the present invention, with control MBMS service transmission;
Fig. 8 is the calcspar of a communication system, and it can carry out delivery confirmation to lower the MBMS transmission by a specific embodiment according to the present invention; And
Fig. 9 is the calcspar of a system, and it can be cut apart by specific embodiment execution MBMS according to the present invention.
Embodiment
Can come thinner portion ground to understand the present invention by the preferred embodiment of following description, it furnishes an explanation with example and the figure of following that can associated is understood.
The present invention describes reference pattern, the wherein similar similar element of digitized representation.
Though the present invention describes with the TDD of associated and the wireless communication system of FDD pattern, the important the present invention of being noted that can carry out in the wireless communication system of any pattern, comprises TD-SCDMA and CDMA 2000.
Fig. 3 is the flow chart according to a specific embodiment of the present invention, and it demonstrates to be carried out by program 300 and is used for MBMS (for example, UTRAN) is disseminated to the step of one or more WTRU from the network of wireless many sub-districts TDD or FDD communication system.In step 305, which kind of MBMS decision need set up to this communication system.Those MBMS demand definables go out channel allocation parameter specification, such as data rate, target BLER, TTI and/or minimum user's quantity or its analog.
In step 310, the required Resource Unit in each sub-district in communication system can determine according to its availability of desiring to be dispensed to this MBMS.Concerning the TDD communication system, this Resource Unit can comprise some by a particular carrier wave frequency, scrambler, a selectable channels sign indicating number and the defined physical channel of a frame group.As being indicated in detail by TS25.221, the physical channel in TDD is a kind of burst, and it can transmit with special time slot in the radio frame through distributing.That this distribution can be is continuous (that is, will in the time slot allocation in each frame to this physical channel), continuous between maybe this distribution can be (that is, only being distributed in the time slot in the inferior group of whole frames).Concerning the FDD communication system, those Resource Units can comprise some by a particular carrier wave frequency, scrambler, defined physical channels such as initial and termination time duration that a selectable channels sign indicating number and being used to provide.In step 315, those cell set are made into several groups that contain one or more sub-districts (that is, the group), to guarantee MBMS to a certain degree.In step 320, give each cell set in this communication system with those Resource Unit assignments.
In step 325, when carrying out program 300, then in step 335, use multiframe to distribute as if use FDD communication system.If when selecting the TDD communication system to carry out program 300, whether decision uses multiframe to distribute in step 330.The use that multiframe is distributed can be the basis in the separated by spaces (that is distance) of those minizones.When using multiframe to divide timing in FDD communication system (step 335) or in TDD communication system (as pointing out) by " agreement " output of step 330, can be minimized in the interference in this communication system, so can guarantee certain MBMS service routine (step 340) in each repetition period by whole sub-districts being set up a repetition period and each cell set being set up one desire to be used in the frame time group that MBMS transmits.If in this TDD communication system, determined not use multiframe to divide timing, then provide different TS combinations, and in each frame, use identical TS combination (step 345) each cell set.Will be appreciated that and to go on foot the decision of execution in step 330 relatively independently of one another or with any one of previous steps 305,310,315,320.
In step 350, this is transmitted in order to MBMS in resource unit allocation each sub-district in this communication system of assignment.In step 355, those have divided the Resource Unit that is used in the MBMS transmission to those WTRU accessible informations to indicate how access.In step 360, those WTRU can receive the MBMS from one or more sub-districts.In step 365, determine whether those determined MBMS demands in step 305 do not change or still satisfy.Do not reach when still satisfying if those MBMS demands have changed, program 300 can be back to the step 360 that WTRU continues to receive MBMS.If those MBMS demands have changed or do not satisfy, then program 300 can be back to step 305 place of the beginning of program 300, so can set up new MBMS demand.
According to the present invention, use time slot to manage the interference of lowering the minizone, by this time gap allocating is given special frame and given the sub-district with good mode assignment frame.This time slot management allows each cell set in an area group is kept optimal power.Concerning TDD, this time slot management can guarantee that the WTRU that receives the DL signal can experience the least interference of other sub-district in comfortable these time slots.They can successfully decipher the DL data that received on these channels, minimize transmission requirements again and guarantee to contain high data rate on these channels in this cell area.This can be by coming assignment to give WTRU and reach in the mode that cell set is divided into several groups and each cell set and has a time gap allocating group of a uniqueness channel assignment and time slot.
The present invention can have execution one time domain recycling pattern on the wireless communication system of serving with support MBMS several sub-districts one.This time domain recycling and frequency recycling are identical to the influence that improves receiving quality.According to the present invention, this time domain recycling pattern can assure that some sub-district in the TDD spreading area will transmit its MBMS service in some time slot, and it will stay and not by other sub-district use.
TDD viewpoint of the present invention can be applied to known at UMTS TDD R99 (3.84Mcps and 1.28Mcps select) and the S-CCPCH more backward or the example of DL shared channel, it is with irrelevant by the certain content (such as MBMS) of its transmission, and still the reliable service to MBMS then is considered as very important special example.Even there are not MBMS, technology of the present invention will improve in the data rate at cell edge place and attainable containing.In order there not to be loss of generality, then consider the example of the MBMS that on S-CCPCH, carries; Even the feasibility of this method can be extended to the service of any kind of of carrying at the common channel of any DL (such as the DL shared channel) in form.Then the two common channel of DL that adopts another kind of pattern is (that is, HS-DSCH) to FDD and TDD for R5.
The influence of carrying out channel assignment technology of the present invention can be illustrated by the result from WTDD emulation.In DL, each WTRU can carry its data with 16 spreading codes of SF=16 and reach near the data rate of 2Mbps by each filling in 12 DL time slots.If continuously when carrying each frame, use the single time slot of whole 16 SF=16 spreading codes can therefore produce the data rate of about 170kbps.In following whole example, can suppose simply 1 time gap allocating that fills up of each frame is given this S-CCPCH or equally given this MBMS.Similarly, suppose that each time slot is 170kbps.
According to the present invention, but come those time slots of assignment in the mode of lessen any interference when broadcasting MBMS broadcasting and other broadcasting (its when can in overlapping coverage area, take place).Those time slots can reuse in those sub-districts according to the demand of MBMS.This can with the MBMS block the duration irrelevant and carry out with the irrelevant mode of TTI.
According to the present invention, when using by whole sub-districts, then can successfully develop and use multiframe to distribute and TTI as if identical TS.In each pre-grouping of cell set, give unique S-CCPCH group with the sub-district assignment in every group.
According to the present invention, can reuse possible time slot combination according to its repetition period.This can set up time domain recycling pattern.If when identical TS desires to be used by whole sub-district, then can successfully develop and use multiframe to distribute and TTI.Along with each MBMS block TTI=20 millisecond (2 frames), the repetition period (8 frame) that the S-CCPCH of each sub-district can 80 milliseconds distributes.
First cell set will transmit its MBMS with a time slot n who provides in frame m and m+1, and frame m+2 ..., will not transmit anything among the m+7 with time slot n.Second cell set will transmit its MBMS with identical time slot n, but be in frame m+2 and m+3, but frame m, m+1 and m+4 ..., do not transmit anything among the m+7 with time slot n.The 3rd cell set will transmit its MBMS with identical time slot n, but in frame m+4 and m+5, but be frame m ..., m+3 and m+6 ..., do not transmit anything among the m+7 with time slot n.At last, the 4th cell set will transmit its MBMS with still identical time slot n in frame m+6 and m+7, but frame m ..., do not have things among the m+5.
Each sub-district is the 170kbps/4=42kbps/ sub-district with the average MBMS data rate that the method was produced, and the MBMS TSs efficient in this system is 170kbps/1TS=170kbps/TS.This system will experience effective time domain recycling factor and in fact noiseless on MBMS TSs of 4.Under tabulate in 1 " n " representative " carries a sub-district of carrying the S-CCPCH of MBMS with time slot n in this frame ".Nothing " n " is meaning this sub-district and do not carrying things in this time slot n of this frame.
Table 1
Frame number m m+1 m+2 m+3 m+4 m+5 m+6 m+7
Sub-district in group 1 n n
Sub-district in group 2 n n
Sub-district in group 3 n n
Sub-district in group 4 n n
But this program inference is to other possible combination, as 1MBMS TS, 40 milliseconds of repetition periods and TTI=10 millisecond; Or 1MBMS TS, 160 milliseconds of repetition periods and TTI=40 millisecond.
Be noted that formerly to state and use 3 the time domain recycling factor in the communication system skill often, it can be the selection of a high attraction.Can this notion reach in this by 60 milliseconds of use repetition periods and TTI=20 millisecond.From the viewpoint of physical layer, this is a flat-footed variation.This higher level protocol is had a less revision, its only support now 10,20,40,80,160,320 and 640 milliseconds through the standardized repetition period.This time domain recycling pattern will produce the average MBMS data rate of 170kbps/3=56kbps/ sub-district, every sub-district potentially.Along with this program, only need " sky " TS to hold MBMS.
According to the present invention, be accompanied by the potentiality of 170/2=85kbps, can reach 2 time domain recycling.When if identical single TS is used in MBMS by whole sub-districts, then, can successfully develops and use multiframe to distribute and TTI along with 40 milliseconds repetition period (still changing the TTI of each cell set).In following table 2, ' n ' represents one to carry a cell set of carrying the S-CCPCH of MBMS in the time slot n of this frame.Nothing ' n ' is meaning this cell set and do not carrying things in this time slot n of this frame.
Table 2
Number of frames m m+1 m+2 m+4
Sub-district in group 1 n n
Sub-district in group 2 n n
Sub-district in group 3 n n
Sub-district in group 4 n n
Sub-district in group 5 n n
Sub-district in group 6 n n
Be noted that and allow TTI=20 millisecond (divide timing, can parameter is reached by using " compensation ") in the sub-district of group among the 1-4 when carrying out those multiframes.Should not support in the sub-district in the group 5 and 6 with two continuous slot transmission.As a result, will be at the TSs of the sub-district assignment one-tenth in the group 5 and 6 through time-division.What can see is that each cell set has at least one and there is no time slot from the interference of the minizone of any special other group.Moreover, can operate three pairs of groups that there is no presence of intercell interference each other:
(1) group 1 and organize 2;
(2) group 3 and organize 4; And
(3) group 5 and organize 6.
The superfluous position of utilization in preposition error correction (FEC) can successfully be operated on most scope, can support the highest 85kbps and each frame only to need a time slot simultaneously.
Node B (Node B sync) synchronously can handle by the use branch rate of those time slots of assignment.In the method, can use burst isochronous to support that node B is synchronous.The method is got rid of when the skill method is stated in use earlier originally, will prevent reliable detecting because be concerned about annoyance level.But along with the present invention, during the time slot that does not transmit in this sub-district, the burst isochronous that adjacent cell is heard in a present sub-district is more feasible.
Fig. 4 is the channel assignment figure of use in the TDD communication system, its multiframe assignment used according to the invention.Fig. 4 provide one use assignment to the different TSs and frame of sub-district the two combination carry out the example that time domain reuses.This modified technology can overlapping assignment.In each pre-grouping of cell set, unique S-CCPCH group is given in the sub-district assignment in each group.But, be unlike among Fig. 2 as, the present invention manifests between S-CCPCH one overlapping in group.
As shown in Fig. 4, the sub-district of group 1 is at each frame middle finger dispensing first time slot group TS 1, TS 2Remaining time slot TS 3-TS nThen can't help to organize 1 uses.The physical channel of group 1 is assigned as whole S-CCPCH.The sub-district of group 2 is at each frame middle finger dispensing second time slot group TS 3, TS 4Remaining time slot TS 1-TS 2And TS 5-TS nCan't help to organize 2 uses.The physical channel of group 2 is assigned as whole S-CCPCH.The sub-district of group 3 is at each frame middle finger dispensing the 3rd time slot group TS 2And TS 3Remaining time slot TS 1And TS 4-TS nCan't help to organize 3 uses.The physical channel of group 3 is assigned as whole S-CCPCH.The time slot that group 3 is given in assignment and assignment are given and are organized 1 and to organize 2 time slot overlapping.
Still refer to Fig. 4, it shows in the frame that provides brings an overlapping time slot and the time-division of a time slot in the group 4,5 and 6 into.The sub-district of group 4 is at each frame middle finger dispensing the 4th time slot group TS 1, TS 4Remaining time slot TS 2-TS 3And TS 5-TS nCan't help to organize 4 uses.The physical channel of group 4 is assigned as whole S-CCPCH.The sub-district of group 5 is at each frame middle finger dispensing the 5th time slot group TS 1And TS 3Remaining time slot TS 1And TS 4-TS nCan't help to organize 5 uses.The physical channel of group 5 is assigned as whole S-CCPCH.The sub-district of group 6 is at each frame middle finger dispensing the 6th time slot group TS 2And TS 4Remaining time slot TS 1, TS 3And TS 5-TS nCan't help to organize 6 uses.The physical channel of group 6 is assigned as whole S-CCPCH.One or more time slot of those groups can be overlapping with the time slot of other group.For example, the time slot TS of group 1 is given in assignment 1Can give the time slot TS of group 4 with assignment 1And the TS of group 5 is given in assignment 1Overlapping.Similarly, the time slot TS of group 1 is given in assignment 2Can give the time slot TS of group 3 with assignment 2And the time slot TS of group 6 is given in assignment 2Overlapping.Therefore between any two cell set, there is no the time slot group of phase negative lap, so each cell set has its own uniqueness and its time slot combination is given in assignment.
During those time slots, allow communication and assignment to give the time slot and the frame of several cell set overlapping.Those are combined as so so that between any two cell set, there is no the time slot or the frame group of phase negative lap, this its own uniqueness of each cell set can be provided and assignment to its time slot and frame combination.
Fig. 5 demonstrates one and carry out the example that time domain reuses in the FDD system, and wherein the multiframe of this TDD system distributes (as being presented at as Fig. 4) can be extended to FDD.Fig. 5 one demonstrates the time-domain diagram that frame distributes, and wherein each cell set in the pre-grouping of cell set is used identical S-CCPCH.Channel assignment described in Fig. 4 is subject to special frame concerning each cell set.But the S-CCPCH of each group uses the frame of sharing.This assignment can be applied to whole cell set, but in the pre-grouping of this cell set, unique S-CCPCH group is given in the sub-district assignment in each group.This modified technology can the overlapping frame assignment.This is restricted in the pre-grouping of this cell set, and unique S-CCPCH group is given in the sub-district assignment in each group, and has overlapping between the S-CCPCH group.
Refer to Fig. 5, the first frame group that is consistent with frame 101 and 102 is given in the sub-district assignment of group 1.Remaining frame 103A and 103B can't help to organize 1 and use.The physical channel assignment 105 of group 1 is whole S-CCPCH.The second frame group that is consistent with frame 111 and 112 is given in the sub-district assignment of group 2.Remaining frame 113A and 113B can't help to organize 2 and use.The physical channel assignment 115 of group 2 is whole S-CCPCH.The 3rd frame group that is consistent with frame 121 and frame 122 is given in the sub-district assignment of group 3.Remaining frame 123A and 123B can't help to organize 3 and use.The physical channel assignment 125 of group 3 is whole S-CCPCH.
Refer to Fig. 5, overlapping the bringing into of the assignment of adopting organized in 4,5 and 6.As seeing in Fig. 5, the 4th frame group that is consistent with frame 131 and 132 is given in the sub-district assignment of group 4.Remaining frame 133A and 133B can't help to organize 4 and use.The physical channel assignment 135 of group 4 is whole S-CCPCH.The 5th frame group that is consistent with frame 141 and 142 is given in the sub-district assignment of group 5.Remaining frame 143A and 143B can't help to organize 5 and use.The physical channel assignment 145 of group 5 is whole S-CCPCH.The 6th frame group that is consistent with frame 151 and 152 is given in the sub-district assignment of group 6.Remaining frame 153A and 153B can't help to organize 6 and use.The physical channel assignment 155 of group 6 is whole S-CCPCH.
In those image durations, allow communication and assignment to give the frame of several cell set overlapping.Those are combined as so so that between any two cell set, there is no the frame group of phase negative lap, this its own uniqueness of each cell set can be provided and assignment to its frame combination.
Refer to Fig. 5, be used for allowing for TTI=20 millisecond (it can be reached by setting this S-CCPCH with correct SFN) at the FDD channel assignment of the sub-district of organizing 1-4.FDD allows to be used for the asynchronous cell operation usually, and uses the asynchronous cell operation can make channel assignment of the present invention more easily handle in time.The TTI=10 millisecond need be used in sub-district in group 5 and 6.
According to the present invention, provide a time domain that is used for the FDD transmission to reuse the factor.Introduce this time domain recycling factor and be used for the common channel of DL, particular importance concerning the situation (such as the MBMS on S-CCPCH or DL shared channel) of sharing transmission.This principle is similar to the time domain of use at TDD, but has continuous transmission but not each frame one special TS (as in TDD) in special frame.
In FDD, because in special frame, need the transmission of continuous S-CCPCH or DSCH Downlink Shared Channel (DL DSCH) but not as each frame one special TS as in TDD, so can not be as expansion straight from the shoulder as the known program (the identical TDD of equaling state earlier skill).
Even be not present in FDD as the multiframe that the equates distribution as in TDD, can reach by continuous (that is, each frame) this channel of assignment equally, if not still this base station is wanted, then in some special frame, do not carry it.This S-CCPCH does not need to comprise the guiding position, because this P-CCPCH adopts usually as the phase reference, and does not need to carry other control bit (as TFCI) when free of data exists.Therefore, in these unloaded cycles, there is no need to transmit anything.Use with the related different channels assignment of P-CCPCH channel assignment the one TDD technology that equates to be used in FDD can be provided.
The present invention can be according to 3GPP W-CDM communication system, and service regeulations and high-speed downlink grouped insert (HSDPA) transmission and use voice and data.This 3GPP system only can use as an example and the present invention can be applied to other code division multiple address communication system.Also be noted that FDD of the present invention part can be applied at UMTS FDDR99 and the known S-CCPCHS or the example of DL shared channel in (for example, HS-DSCH is at R5) more backward, and irrelevant with specific content.
According to the present invention, what need know is when the user stops this service or when successfully receive this service, gives the physics of MBMS and transmits resource to discharge assignment efficiently.The obvious MBMS revocation information that the user produced can make and be used for lowering the MBMS transmission.This can be a L3RRC program or a NAS sends signal procedure.After receiving this revocation information, user's MBMS content can remove from relevant with special MBMS now validated user.
Refer to Fig. 6, use an activation/cancelling method in wireless multi-cell communication systems 600, the WTRUs 605 that it comprises several and UTRAN 610 communications is used for the number of transmission demand again of special MBMS with control.
Cancel can be used in to transmit and switch, with user (WTRUs) quantity that determines to receive now this MBMS, but the channel of this communication system 600 of recombinant like this is so that there is preferable performance.Moreover, can lower this and transmit quantity again.
In a specific embodiment, the WTRUs 605 of Fig. 6 operates under one of this communication system 600 specific sub-district, and it can activate this MBMS.This UTRAN 610 can determine WTRUs 605 quantity of operating in the specific cell that can activate MBMS.This UTRAN 610 can be according to determined WTRUs 605 quantity with resource allocation to specific sub-district.This UTRAN 610 uses this resource through distributing that MBMS is disseminated to WTRUs 605.This UTRAN 610 can stop MBMS and the resource of this UTRAN 610 that can reallocate at the WTRUs605 place when whole WTRUs 605 cancels MBMS.
Be as the criterion with effective number of users, UTRAN 610 can install transmit and physical channel to reach maximum radio resource efficiency.Can use this MBMS cancel message information as an obvious sign, this can lower user number counting concerning each by the service that the user underwrote.When the number of users of special service arrives preestablished limit, can carry out this transmission/physical channel and switch.When whole users had cancelled, this MBMS transmission meeting stopped in this sub-district.
In step 615, the user can send signal by UTRAN 610 its WTRUs 605 and activate MBMS.This MBMS can be disseminated to WTRUs 605 (step 620) by UTRAN 610.When the user removed (step 625,635) from effective user of those MBMS, this UTRAN 610 can arouse MBMS transmission/physical channel and switches (step 630) or can scatter this service (step 640) discontinuously in this sub-district as a result.
Refer to Fig. 7, the cell update program of this existence also can make and be used for activating and cancel the MBMS transmission.This also can be installed makes and is used for the cell update program of track user migration in order to be updated periodically.At user's MBMS (step 700) after activating, and because this effective MBMS user knows, this cell update program can be carried out on periodic basis, when moved to new sub-district or can't reach (step 705) by UTRAN 610 with the decision user, so MBMS is spreadable to WTRUs 605 (step 710).When this cell update program display goes out that this WTRU 605 has moved to a new sub-district or is no longer received by UTRAN 610 about periodically updating of those users (step 715), therefore this user MBMS content can cause this MBMS of termination to transmit (step 720) from removing now with in special MBMS is relevant this sub-district the validated user.
In a specific embodiment, at least one of the WTRUs 605 of Fig. 7 can activate this MBMS.This WTRU 605 can provide the renewal of one-period property to this network, and this can indicate first sub-district of the communication system that WTRU 605 operates therein.This UTRAN 610 can be disseminated to this WTRU 605 with MBMS.When this WTRU 605 stop to provide periodically update or its when in this communication system sub-district different, operating with first sub-district, this UTRAN 610 can stop this MBMS at WTRU 605 places.
Fig. 8 demonstrates a wireless communication system 800, and it comprises the WTRUs 805 of several and a UTRAN 810 and a core network (CN) 815 communications.System 800 can provide MBMS announcement and selectable delivery confirmation (step 820).Concerning the paying purpose, be disseminated to WTRUs 805 backs (step 825) at MBMS, report to the further MBMS delivery confirmation (step 830) of UTRAN 810 scalable by WTRUs 805 to CN 815 (step 835).Send signal then can by UTRAN 810 send determine information to WTRU 805, produce new information or Non-Access Stratum node B applying portion (NAS) by UTRAN 810 and directly send signal and reach to CN 815 from WTRU 805.After receiving, to the transmission of each WTRU 805 record MBMS by CN 815.This confirmation can be L3 radio resource control (RRC) or NAS sends signal message.UTRAN 810 can follow the trail of affirmation to each user who activates those MBMS.In case the validated user of whole or predetermined percentage has been confirmed to transmit, then can stop this and transmit (step 840) again.Maximum also can be installed transmit counting again, so that radio resource limitations is used at special MBMS.
In a specific embodiment, the UTRAN 810 of Fig. 8 can be disseminated to MBMS at least one of WTRUs 805 by the MBMS transfer of data that transmits several.This WTRU 805 can indicate whole MBMS transfer of data to this UTRAN 810 and receive.Then, this UTRAN 810 can stop this MBMS transfer of data.
Service is confirmed and can't always be confirmed.For example, the each transmission of some service has data very slightly.Therefore, the cost of transmission is very little again.Allow to be used for this further optimized one and be chosen as during this active program, to identify which kind of service reception acknowledge.
The method that other MBMS that can succeed along with transmitting again of attenuating transmits is the data segment out of the ordinary that receives and store from each transmission, transmits next the transmission up to this MBMS service in conjunction with these blocks again from each then and finishes.This MBMS transmission comprises some data segments, its each comprise one or more making and be used for confirming the Cyclical Redundancy Checks (CRCs) that success is transmitted.
MBMS is cut apart and can be carried out by the wireless communication system 900 that is presented at Fig. 9.System 900 comprises the WTRU 905 of at least one and UTRAN 910 communications.Receiving MBMS transmission back (step 915), WTRU 905 can store all the data segment (step 920,925) that success receives.WTRU905 can use MBMS information come in a planned way only to receive those formerly transmit in the data segment (for example, the 2nd section) (step 930) that receives of success, but not receive whole transmission.Therefore, can lower WTRU handles and power consumption.Extraly, can lower and be used for success and transmit required transmission quantity, because it only needs in a planned way to receive those sections of receiving of success as yet, and the whole MBMS of unplanned reception transmits.This MBMS is cut apart and can be lowered MBMS and transmit quantity again or stop this quantity, and determines information irrelevant (step 935) with being transmitted by the selectivity MBMS that the user produced.
In a specific embodiment, the UTRAN 910 of Fig. 9 can be divided into this MBMS several each other data segments, and each MBMS data segment can be sent to WTRU 905.Each MBMS data segment that this WTRU 905 can have been received by WTRU 905 suitably is stored in the internal memory (not to be had and shows).WTRU 905 can identify the MBMS data segment that at least one is not received suitably by WTRU 905 to UTRAN 910.This UTRAN 910 only can transmit the MBMS data segment that identified again to WTRU 905.
Before transmitting those MBMS data segments, UTRAN 910 can indicate when each MBMS data segment can be transferred into WTRU 905 and how many data segments this MBMS comprises to WTRU 905.Each MBMS data segment can comprise at least one makes the Cyclical Redundancy Checks (CRC) that are used for confirming that the MBMS data segment has been transmitted by these WTRU 905 successes.The operator of UTRAN 910 can determine whether this WTRU 905 has received whole MBMS data segments, pays so that promote.
In another specific embodiment, this UTRAN 910 can be divided into this MBMS several each other MBMS data segments, and plans to be sent to WTRU 905 in the different time.This UTRAN910 can indicate this different planned time and how many data segments this MBMS comprises to WTRU 905.This UTRAN 910 can be sent to WTRU 905 with those MBMS data segments when different planned times.This WTRU 905 can activate receiver (do not have and show) therein when different planned times, to receive the MBMS data segment that is transmitted by UTRAN 910.This WTRU 905 can identify the MBMS data segment that at least one is not received suitably by WTRU 905 to UTRAN 910.When this data segment through differentiating was desired to transfer to WTRU 905 again, this UTRAN 910 can indicate once the time of distributing WTRU905.UTRAN 910 only can transmit this MBMS data segment through differentiating again to WTRU.This WTRU 905 can activate receiver therein at this time place through distributing, to receive the MBMS data segment that this transmits again.
Though the present invention is along with showing especially with reference to preferable specific embodiment and describe out, will be appreciated that by the personage who knows this skill can on form and details, make different changes and do not leave the aforesaid scope of the present invention.

Claims (14)

1. method of in wireless transmission/receive unit WTRU, implementing, described method comprises:
From the first sub-district receiving multimedia broadcast service MBMS transmission, wherein said MBMS service MBMS transmission comprises one or more data segments of MBMS service MBMS;
Storage is from the reception data segment of described MBMS service MBMS transmission;
Will be from the reception data segment of described MBMS service MBMS transmission and making up from different districts in response to the reception data segment of reception information at least one other MBMS service MBMS transmission of different transmission time transmission, wherein receive under the situation of MBMS service MBMS combined schedule at described wireless transmission/receive unit WTRU, described combination is based on that described MBMS service MBMS combined schedule carries out, and
Wherein said reception information is pointed out the transmission time difference between described first sub-district and described different districts.
2. method according to claim 1, described method also comprises:
The data segment that reception is lost; And
Store the described data segment of losing.
3. method according to claim 1, wherein said reception are from least one source, and wherein said at least one source comprises at least one sub-district, at least one node B, at least one base station or at least one network.
4. method according to claim 1, described method also comprises:
The reception of dispatching the data segment of losing based on MBMS service MBMS information;
Receive the described data segment of losing; And
Store the described data segment of losing.
5. method according to claim 1, described method also comprises:
The indication when reception will be transmitted about a plurality of data segments.
6. method according to claim 1, wherein said MBMS service MBMS transmission is to be undertaken by less important common control physical channel S-CCPCH.
7. wireless transmission/receive unit WTRU, described wireless transmission/receive unit WTRU comprises:
Receiver is arranged to from the first sub-district receiving multimedia broadcast service MBMS transmission, and wherein said MBMS service MBMS transmission comprises one or more data segments of MBMS service MBMS;
Wherein said wireless transmission/receive unit WTRU also is arranged to:
Storage is from a plurality of reception data segments of described MBMS service MBMS transmission; And
To make up with the data segment that at least one other MBMS service MBMS that transmits in the different transmission times in response to reception information from different districts transmits from the data segment of described MBMS service MBMS transmission, wherein receive under the situation of MBMS service MBMS combined schedule at described wireless transmission/receive unit WTRU, described combination is based on that described MBMS service MBMS combined schedule carries out, and wherein said reception information is pointed out the transmission time difference between described first sub-district and described different districts.
8. wireless transmission/receive unit WTRU according to claim 7, wherein said receiver also are arranged to and receive the data segment of losing, and described wireless transmission/receive unit WTRU also is arranged to the described data segment of losing of storage.
9. wireless transmission/receive unit WTRU according to claim 7, wherein said receiver is arranged to from least one source and receives a plurality of data segments, and wherein said at least one source comprises at least one sub-district, at least one node B, at least one base station or at least one network.
10. wireless transmission/receive unit WTRU according to claim 7, described wireless transmission/receive unit WTRU also are configured to the reception of dispatching the data segment of losing based on MBMS service MBMS information, wherein:
Described receiver also is arranged to and receives the described data segment of losing, and described wireless transmission/receive unit WTRU also is arranged to the described data segment of losing of storage.
11. wireless transmission/receive unit WTRU according to claim 7, wherein said receiver also are arranged to the indication when reception will be transmitted about a plurality of data segments.
12. wireless transmission/receive unit WTRU according to claim 7, wherein said MBMS service MBMS transmission is to be undertaken by less important common control physical channel S-CCPCH.
13. a wireless transmission/receive unit WTRU, described wireless transmission/receive unit WTRU comprises:
Be arranged to the circuit that receives at least one multimedia broadcast multicast services MBMS block by less important common control physical channel S-CCPCH from the first node B;
Described circuit also is arranged to receiving multimedia broadcast multicast services MBMS information, and described multimedia broadcast multicast services MBMS information is pointed out at least one time interval;
Wherein said circuit also is arranged to by described less important common control physical channel S-CCPCH and receives the first multimedia broadcast multicast services MBMS block from the described first node B, and in the pointed time interval, the second multimedia broadcast multicast services MBMS block that will receive from different node B by the less important common control physical channel S-CCPCH of difference with make up from first section of the described first node B, wherein receive under the situation of multimedia broadcast multicast services MBMS combined schedule at described wireless transmission/receive unit WTRU, described combination is based on that described multimedia broadcast multicast services MBMS combined schedule carries out.
14. a wireless time division duplex TDD network, described time division duplex TDD network comprises:
Be arranged to the circuit of cell set, be used for first sub-district with described cell set and be assigned to first time slot that is used for MBMS service MBMS transmission and second sub-district of described cell set is assigned to second time slot that is used for described MBMS service MBMS transmission; And
Wherein, described first time slot in frame is different time slots with described second time slot.
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